Wouldn't micro worms be too small as food? What would happen to uneaten micro worms?
The reason I selected daphnia is mainly because I could gut feed nutrients to them much the same way as artemia, without the saltwater hassle of artemia. The other reason is if left uneaten, daphnia will not die off in typical planted tanks, and will offer fish the chance to hunt them down when they are hungry.
I've also thought about tubifex worm culture also because they will continue to live in the tank (substrate) to help clean up detritus, and provide a good hunting opportunities for fish.
How do you culture micro worms?